There's a Social Report under the Audience section. However it shows that none of our visitors are socially engaged. Searching the Google Analytics Help Centre for "social" or "engagement" doesn't return anything. How do I track social engagement?
This was only announced a couple of days ago; stats are being rolled out incrementally. (You should read through the comments there for some further notes.) You may need to also implement the _trackSocial method in your GA code if it's not already there, or modify your social button settings eg. AddThis depending upon whether you're using custom button code, etc.